Vibrating indirect cooling conveyor used to cool thermally treated hazardous waste from 600 degrees F to 200 degrees F using water as the cooling medium. The vibrating cooling conveyor is 5 foot wide by 50 foot long.
The conveying trough uses deck plates with convoluted embossing through which the cooling water flows to remove the heat from the hazardous waste. The cooling chamber is totally enclosed and vented. Material of construction is carbon steel and the drive is a natural frequency design with one low HP motor.
What is Indirect Cooling?
In indirect cooling, a hot material is conveyed along a vibratory conveyor trough surface cooled on its underside by a completely segregated cooling medium flow stream such that the cooling medium “Indirectly” absorbs the heat given up by the hot material as it moves along the length of the conveyor trough. (Indirect heating can occur on a similar basis with hot water, steam, or other heated medium.)
Counter-flow of the two flow streams is typically employed to improve heat transfer efficiency. Although water (or steam) is the most common cooling (heating) medium, aqueous solutions of ethylene glycol, heating oils, and other mediums are used as well.
Indirect cooling is usually applied when the material is oxygen sensitive or categorized as a hazardous waste.
Construction may be carbon steel, stainless, or other metals.